imx: ventana: add GW5904 support

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/board/gateworks/gw_ventana/ventana_eeprom.h b/board/gateworks/gw_ventana/ventana_eeprom.h
index 9ffad58..bacaf5a 100644
--- a/board/gateworks/gw_ventana/ventana_eeprom.h
+++ b/board/gateworks/gw_ventana/ventana_eeprom.h
@@ -112,6 +112,7 @@
 	GW551x,
 	GW552x,
 	GW553x,
+	GW5904,
 	GW_UNKNOWN,
 	GW_BADCRC,
 };